Magnetic tape for use in cassette for digital audio tape recorder and biaxially oriented polyester base film therefor
    2.
    发明公开
    Magnetic tape for use in cassette for digital audio tape recorder and biaxially oriented polyester base film therefor 失效
    盒式磁带用于数字磁带录音机使用和该双轴取向聚酯膜。

    公开(公告)号:EP0616320A1

    公开(公告)日:1994-09-21

    申请号:EP94301810.1

    申请日:1994-03-15

    申请人: TEIJIN LIMITED

    IPC分类号: G11B5/704 G11B5/70 B32B27/36

    摘要: There is provided a biaxially oriented polyester base film for a magnetic tape for use in a cassette for a digital audio tape recorder. The film has (a) a stress when the biaxially oriented polyester base film is extended in the longitudinal direction by 5 % of at least 12 kg/mm², (b) a residual extension in the longitudinal direction of 0.2 % or less and a residual extension in the transverse direction of 0.3 % or less, (c) a heat shrinkage in the longitudinal direction of 1.5 % or less, (d) at least one surface of which has a surface roughness, Ra, of 25 nm or less, and (e) a film thickness of in the range of from 3 to 12 µm. A magnetic tape for use in a cassette for a digital audio tape recorder is also provided.

    摘要翻译: 提供了一种用于在一个带盒使用用于数字音频磁带录音机磁带提供了一种双轴取向聚酯基膜。 该薄膜具有(a)的应力。当双轴由至少12千克/毫米<2>,(b)以0.2%或更小的长度方向的残留伸长5%取向聚酯基膜在纵向方向上延伸 和残留伸长在0.3%或更少的横向方向上,为25nm(c)以1.5%或更小的长度方向的热收缩率,(d)至少一个表面,该表面具有一表面粗糙度Ra,或 以下,和(e)的在3至12微米的范围内的膜厚度。 因此提供了一种用于在一个带盒使用用于数字音频磁带录音机的磁带。